AARO Historical Record Report Volume I — what the review of prior US programmes concluded

The All-domain Anomaly Resolution Office released the unclassified version of its Historical Record Report Volume I in March 2024. The Volume I report is the most comprehensive single public document produced to date by the US government on the institutional history of US UAP-related programmes and on the longstanding allegations that the US government has at some point possessed recovered extraterrestrial technology. The report's substantive conclusions are unambiguous, and its institutional framing matters substantially for the contemporary US UAP discussion.

The scope of the report

Volume I covered the period from 1945 through 2023 and addressed three principal subject areas: the institutional history of US government UAP investigation programmes (Project Sign, Grudge, Blue Book, AATIP, UAPTF, AOIMSG, AARO itself); the allegations associated with various claimed-but-unconfirmed historical programmes (most notably the constellations of claims around "reverse engineering" of recovered craft); and the question of whether the Office had identified verifiable evidence supporting any of the principal historical allegations of US government possession of non-human technology.

The report drew on a substantial documentary base, including declassified historical files, interviews with serving and former government personnel, and direct review of the classified portions of the relevant programme records.

The principal conclusion

The Volume I report concluded that AARO had identified no verifiable evidence — at the time of the report's preparation — supporting the central allegations of US government possession of, or reverse-engineering programmes for, non-human technology. The report explicitly addressed many of the specific public claims made by various former officials and contractors over preceding decades, and concluded that the available evidence in each case did not substantiate the claim at the level of definitive institutional confirmation.

The report was careful in its framing on several methodological points. It noted that the conclusions reflected the evidence available to AARO at the time of preparation; that AARO had encountered cases in which interviewees declined to provide sworn information; and that the absence of verifiable evidence for a claim does not by itself constitute affirmative evidence against the claim. These methodological qualifiers are substantively important and have been frequently elided in subsequent public discussion of the report's findings.

The report's reception

The Volume I report's principal conclusion has been broadly accepted by US government institutional actors, including the relevant congressional committees, as reflecting the best institutional assessment available at the time of release. It has been contested by certain whistleblower-aligned voices in the broader public UAP discussion, including former intelligence officer David Grusch, whose 2023 congressional testimony advanced contrary allegations which AARO has addressed but has stated it has not been able to verify on the available evidence.

Volume II, which AARO has indicated is in preparation, is expected to extend the historical review further into specific programmes and allegations that Volume I treated more briefly. For comparison with the Grusch testimony and the broader institutional context, see the SkyLens UAP files page.

Editorial note: Independent SkyLens analysis of the contemporary US UAP institutional framework (AARO, UAPTF, AATIP) and the public documents and testimony associated with it. The case index linking related releases is on the SkyLens UAP files page.